Pension and Other Postretirement Benefits - Summary of Information in Curtailment or Settlement of Benefits Requiring Remeasurement, Update to Discount Rates Used to Determine Benefit Obligations of Affected Plans (Detail) $ in Millions		3 Months Ended
	Jan. 08, 2024 USD ($)	Mar. 31, 2024 USD ($) Employees	Mar. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Decrease to other noncurrent assets		$ (9)	$ 29
Action# 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of affected plan participants | Employees		110
Decrease to other noncurrent assets	$ (1)	$ (1)
Curtailments	$ 1	$ 1